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Icahn School of Medicine at
Mount Sinai
Neil Theise, MD
Department of Pathology
New York University School of Medicine
New York City
Stem Cells, Complexity
and the Science of Being
“Thinking is better than knowing,
but looking is even better.”
Goethe, “Maxims”
Goethe, “Maxims”
“Thinking is better than knowing,
but looking is even better.”
 Surprises in stem cell biology
 Complexity and Emergence
 Everything only looks like a thing!
 What/who are we…?
 Surprises in stem cell biology
 Complexity and Emergence
 Everything only looks like a thing!
 What/who are we…?
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
LethalLethal
IrradiationIrradiation
Male bone marrow transplantMale bone marrow transplant
F.I.S.H.F.I.S.H. forfor
Y-ChromosomeY-Chromosome
Stem Cells, Complexity, and the Science of Being
The Standard Paradigm:
Restricted Cell Plasticity
Irreversible gene restrictions
Embryology &
Adult Tissue Reconstitution
Self renewal
BEWARE
OF
DOGMA
The
Great
Stem Cell
Debate
2001
Embryonic Stem Cells
All three layers of the embryo:
Mesoderm,
Endoderm,
Ectoderm
Embryonic Stem Cells
All three layers of the embryo:
Mesoderm: muscle, blood, bone
Endoderm: visceral organs
Ectoderm: brain, nerves, skin
so….
Embryonic Stem Cells
Can make everything!
Embryonic Stem Cells
Can make everything, in order to:
perform cell transplants…
create artificial organs (livers!)
implant genes for gene therapies…
Embryonic Stem Cells
Can make everything!
Adult Stem Cells
Can make . . . ?
Sort PKH-brightSort PKH-bright
Male Donor BMMale Donor BM
Lin DepleteLin Deplete
ElutriateElutriate
PKH26PKH26
LabelLabel
48 Hours48 Hours
TransplantTransplant singlesingle cell intocell into
22oo
Female RecipientFemale Recipient
11oo
Female RecipientFemale Recipient
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Bone Marrow
One
Adult Cell
Epithelia of
• Liver
• Lung
• Gut, (Pancreas)
Skin, Hair follicles
MESODERM
ENDODERM ECTODERM
True clonality = True adult stem cell plasticity!
One
Adult Cell
Stem Cells, Complexity, and the Science of Being
Irreversible gene restrictions
What if gene restrictions
are REVERSIBLE?
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Controversy!!!
trivial...trivial...
vs.vs.
ROBUST!!!ROBUST!!!
 Surprises in stem cell biology
 Complexity and Emergence
 Everything only looks like a thing!
 What/who are we…?
Conversations with Jane Prophet
New Media Artist and
Professor, Interdisciplinary Studies
University of Westminster, London UK
SciArt Award, Wellcome Trust 2002
Date: 9th May 2002
Location: Neil's office, New York
Jane says: “Ideas about pathways are interesting. AJane says: “Ideas about pathways are interesting. A
lot of people who are involved in digital biology arelot of people who are involved in digital biology are
interested in things like swarming people and sointerested in things like swarming people and so
called ’soup organism’ behaviour. And one of thecalled ’soup organism’ behaviour. And one of the
useful models to take forward is about antuseful models to take forward is about ant
colonies…”colonies…”
Complex Adaptive Systems:
Interacting individuals that,
if they fulfill 4 criteria,
organize themselves from the bottom up,
into larger structures…
ewin R, Complexity: Life at the Edge of Chaos. 2nd ed.
Chicago IL: University of Chicago Press; 2002.
ohnson S, Emergence. New York NY: Scribner; 2001.
Complex Adaptive Systems:
Complex Adaptive Systems:
Interacting individuals that,
if they fulfill 4 criteria,
organize themselves from the bottom up,
into larger structures
which appear planned from the top, downward…
BUT ARE NOT!
These structures are referred to as
“emergent self-organization”
and are ADAPTIVE.
Complex Adaptive Systems:
Interacting individuals that,
if they fulfill 4 criteria,
organize themselves from the bottom up,
into larger structures
which appear planned from the top, downward…
BUT ARE NOT!
These structures are referred to as
“emergent self-organization”
and are ADAPTIVE.
Complex Adaptive Systems:
Interacting individuals that,
if they fulfill 4 criteria,
organize themselves from the bottom up,
into larger structures
which appear planned from the top, downward…
BUT ARE NOT!
These structures are referred to as
“emergent self-organization”
and are ADAPTIVE.
Complex Adaptive Systems:
Interacting individuals that,
if they fulfill 4 criteria,
organize themselves from the bottom up,
into larger structures
which appear planned from the top, downward…
BUT ARE NOT!
These structures are referred to as
“emergent self-organization”
and are ADAPTIVE.ADAPTIVE.
Complex Adaptive Systems:
Rise and fall of economic markets
Urban development
Stem cells and tissue development and repair
Beatlemania
Rise and fall of civilizations
Evolution and speciation
Complex Adaptive Systems:
Rise and fall of economic markets
Urban development
Stem cells and tissue development and repair
Beatlemania
Rise and fall of civilizations
Evolution and speciation
Stem cells and formations of tissues, organs, bodies
Complex Adaptive Systems:
• Numbers matter
Complex Adaptive Systems:
• Numbers matter
• Negative feedback loops
Complex Adaptive Systems:
• Numbers matter
• Negative feedback loops
• Interactions are local without global sensing
Complex Adaptive Systems:
• Numbers matter
• Negative feedback loops
• Interactions are local without global sensing
• Low level randomness
Complex Adaptive Systems:
• Numbers matter
• Negative feedback loops
• Interactions are local without global sensing
• “Quenched disorder”
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Low level engraftmentLow level engraftment
is not only NOT trivial,is not only NOT trivial,
but it is VITALbut it is VITAL
–– literally so.literally so.1-31-3
Low level engraftmentLow level engraftment
is not only NOT trivial,is not only NOT trivial,
but it is VITALbut it is VITAL
–– literally so.literally so.1-31-3
heise ND. Exp Hematology 2003heise ND. Exp Hematology 2003
Inverno M, Theise ND. BCMD 2004Inverno M, Theise ND. BCMD 2004
Inverno M, Theise ND, Prophet J.Inverno M, Theise ND, Prophet J.
In: Potten C, Wilson J, Clarke R, Renahan A:In: Potten C, Wilson J, Clarke R, Renahan A:
Tissue stem cells: Biology and applicationsTissue stem cells: Biology and applications
Implications of Cell Lineages
as Complex Adaptive Systems
Mass extinctions.
order
disorder
“chaos”
disorder
“chaos”
complex
adaptive
systems
order
Implications of Cell Lineages
as Complex Adaptive Systems
Mass extinctions, eg:
? Aplastic anemia
? Fulminant liver failure
Implications of Cell Lineages
as Complex Adaptive Systems
The price of adaptation,
i.e. of LIFE,
is DEATH
Implications of Cell Lineages
as Complex Adaptive Systems
Hierarchies of complex systems…
 Surprises in stem cell biology
 Complexity and Emergence
 Everything only looks like a thing!
 What/who are we…?
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Implications of Cell Lineages
as Complex Adaptive Systems
Hierarchies of complex systems…
thing vs. phenomena
depends on scale of observation
Stem Cells, Complexity, and the Science of Being
ChRISTOPHER SWANN
Hierarchies of complex systems…
thing vs. phenomena
depends on scale of observation
=> COMPLEMENTARITY
Theise. Nature, May 2006
Theise & Kafatos, Complexity, 2013
Stem Cells, Complexity, and the Science of Being
Communities
Bodies
Cells
e.g. cities, cultures, ecosystems, Gaia
Bodies
Cells
 Surprises in stem cell biology
 Controversies in stem cell biology!
 Complexity and Emergence
 Everything only looks like a thing!
 What/who are we…?
Communities
Bodies
Cells
Theise. Nature, May 2006
Theise & Kafatos, Complexity, 2013
Boundaries are relative...Boundaries are relative...
Implications of hierarchies of complex systems
Communities
Bodies
Cells
Biomolecules ?
Communities
Bodies
Cells
Biomolecules
Communities
Bodies
Cells
Biomolecules
More implications, of course.More implications, of course.
Theise ND.
Now you see it, now you don’t.
Nature, May 2005
“Cell doctrine: modern biology and medicine see the
cell as the fundamental building block of living
organisms, but this concept breaks down at different
perspectives and scales.”
Communities
Bodies
Cells
Biomolecules
“The validity of cell doctrine depends on the scale at
which the body is observed…
Communities
Bodies
Cells
Biomolecules
“The validity of cell doctrine depends on the scale at
which the body is observed. To limit ourselves to the
perspective of this model may mean that explications of
some bodily phenomena remain outside the capacity of
modern biology…
Communities
Bodies
Cells
Biomolecules
“The validity of cell doctrine depends on the scale at
which the body is observed. To limit ourselves to the
perspective of this model may mean that explications of
some bodily phenomena remain outside the capacity of
modern biology…
e.g. Acupuncture
Communities
Bodies
Cells
Biomolecules
What kind of models?
for example,
2 models from Ancient Greece:
Is the body made of…
indivisible subunitsindivisible subunits or an endlessly divisible fluidan endlessly divisible fluid
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Stem Cells, Complexity, and the Science of Being
Models of the body are perspective/technique dependent
Look at it this way (cell membranes):
the body is made of cells
Look at it that way (organelles):
the body is an endlessly divisible fluid
Still more implications of
complexity in life…
Communities
Bodies
Cells
Biomolecules
Atoms
Communities
Bodies
Cells
Biomolecules
Atoms
Communities
Bodies
Cells
Biomolecules
Atoms
Communities
Bodies
Cells
Biomolecules
Atoms
We are walking, talking Earth…
Communities
Bodies
Cells
Biomolecules
Atoms
Subatomic Particles
Communities
Bodies
Cells
Biomolecules
Atoms
Subatomic Particles
Strings (or whatever)
Communities
Bodies
Cells
Biomolecules
Atoms
Subatomic Particles
Strings (or whatever)
The Quantum Foam
Stem Cells, Complexity, and the Science of Being
We don’t live in the universe . . .
. . . we are the universe
Diane Krause MD PhDDiane Krause MD PhD
Saul Sharkis MD PhD, Michael CollectorSaul Sharkis MD PhD, Michael Collector
Octavian Henegariu MDOctavian Henegariu MD
Sonya Hwang MD, Rebekah GardnerSonya Hwang MD, Rebekah Gardner
Sarah NeutzelSarah Neutzel
Single cell multiorgan plasticitySingle cell multiorgan plasticity
Cell Team
Jane ProphetJane Prophet
Mark D’InvernoMark D’Inverno
Rob SaundersRob Saunders
Peter RidePeter Ride
Neil TheiseNeil Theise
Discussions were part of the production of "Cell",
a collaboration across art and science
funded by a Wellcome Trust SciArt Award
and an award from Future Physical.
"Cell" is coordinated by Peter Ride
and is a DA2 Digital Arts Agency production.
Bushell & Theise
“There’s no such thing as a central dogma
into which everything will fit...any mechanism
you can think of, you will find -- even if it is
the most bizarre kind of thinking.
“Anything...
“So if the material tells you, ‘It may be
this,’ allow that. Don’t turn it aside and call
it an exception, an aberration, a contaminant.
“So many good clues have been lost that
way.“
“A Feeling for the Organism”
Evelyn Fox Keller, 1983
Nobel-laureate Barbara McClintock:
Stem Cells, Complexity, and the Science of Being

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