細胞晶片研究發展的國際 合作經驗
Post on 11-Jan-2016
41 Views
Preview:
DESCRIPTION
TRANSCRIPT
1 - Virtuoscope & Wireless Mixed Signal Biochip Lab
細胞晶片研究發展的國際合作經驗
Prof. Ching-Hsing Luo ( 羅錦興 )Department of Electrical Engineering
National Cheng Kung University
Tainan, Taiwan
2 - Virtuoscope & Wireless Mixed Signal Biochip Lab
From Tissue To Single Cells
• Tissue is a group of cells, cannot see single one easily.
• Basic researches of DNA and virus move on the investigation of single cells.
• Nanotechnologies can see inside the single cells and operate DNA easily.
• Computing power enables the simulation easily in comparison to experiments.
3 - Virtuoscope & Wireless Mixed Signal Biochip Lab
International CollaborationNecessary Conditions
• Have the niche, replaceable not easily.
• Have a teamwork in Taiwan to collaborate with.
• Find the mutual needs in the project.
• Not just learn their techniques.
• Open the mind if you can.
4 - Virtuoscope & Wireless Mixed Signal Biochip Lab
My Niche: Single Heart Cell ModelLuo-Rudy model in 1991 &1994 Circ. Res.
3 papers with SCI cited 333, 410, 186 in total and 184, 280, 88 in recent five years
5 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Action Potential by Model Simulation
0 100 200 300 400 500 600-100
-50
0
50
Mem
bra
ne P
ote
ntial (m
V)
time(msec.)
Action potentials for Ko=7, 5.4, 4, and 3 mM
[K]o=7 5.4 4 3 mM
1. A standard procedure of model simulation has been developed to evaluate the accuracy of simulation results
2. A physiological simulation fake is discussed.
6 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Drug screening Platform- 1st projectInvited by Prof. Miqin Zhang, UW
by Miqin Zhang
High performance of integrated cell-based sensors for drug screeningwith impedance measurement only.
7 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Mission
• Medical Researches
Stem cell, Neuron cell, Cancer cell for Drug screening, Differentiation or cultivation control, Gene therapy
• Engineering Technologies
Chip – micro/nano (channel and pumping)
Sensor and actuator – micro/nano scale
Cell Modeling – Ischemia, drug effects
8 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Team Up
Domestic: 1. Cell-based microchip platform – 李清庭、
羅錦興、魏憲鴻、 鍾宜璋2. Cell Model - 羅錦興、吳勝男、鄧君豪3. Bio-application – 宋瑞珍副校長、林茂村
院長、吳勝男International: Univ. of Washington• Miqin Zhang: drug screening• Meldrum: HIV, AIDS applications
9 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Commercial Microarray chip
10 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Single Cell Chip Platform
Microfluid Flow
Micromixer
Micropump
Micropump
Single Cell
Microchannel
Microelectrode
Microelectrode
Microvalve
Microvalve
Flow sensor
1. Automatic Protocol control (concentration clamp)
2. Voltage clamp for ionic channel measurement
11 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Passive Mixing in Microfluidic Channel by Prof. Wei
Setup
Width 300 mOpen angle =60
Channel Width
12 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Mixing Results-1
13 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Mixing Results-2
R
α
14 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Cell Clamping Microchip PlatformDifferentiation or cultivation protocolsSilicon oxide
Electrode
Sucking pressure
Glass
Silicon
15 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Cell Attachment and Rejection
CellElectrode
Channel
Br OHn
OHn SH
I2 EtOH
OH Sn
S OHn BrCH2CH2OH
POCl3Br O P
O
Cl
Cl
O Sn
S On P
O
OP
O
O
BrOH
BrOH
O Sn
S On P
O
OP
O
O
N+ OH
N+OH
CH3CH3
CH3 CH3CH3
CH3Br
Br
O Sn
S On P
O
OP
O
O
NH2
OHNH2
OH
NH3
reflux
thiourea H2O/OH-
(I)
(II)
(IV)
n=9
(V)
(CH3)3N
(VI)
(III)
Cell Rejection Compound
16 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Cell-Attachment Technique by Nano-Imprinting.
by Prof. Chung and Prof. Luo
• Using flat PDMS imprint SH-(CH2)11COOH on Au
cell favoring coating
PDMS
Time≒ 60sec
SH-(CH2)11COOH
Au
Imprinting:
Chemical bond:
17 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Attachment Structure
flowingcell
cell
platform
Au on silicon base
(a)Before adhering
(b) After adhering
1.6 μm Platform
silicon
18 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Electrode Shape Effect
18x18 μm 2
square platform
• Cell name : human CD34+ Progenitor Cell provided by Prof. Lin, Chi-Mei Medical center.
• Cell is stretched to platform corner
18 μm diameter
circle platform18x36 μm 2 ellipse platform
19 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Budget Consideration
• Usually not a big funding, just initiate the collaboration with let-go rule.
• 應用於藥物篩選的細胞微晶片平台和細胞模型 NSC 94-2614-B-006 -037, $1,200,000 per year for six professors.
• Work together and come up something for future budget application in both sides.
• International collaboration experiences are important to open your territories and mind.
20 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Nano-tag studies on LDL atherogenic effects on VEC- 2nd project
• Applying Nano National-type Project, passed the first phase with good order.
• Initiated by Prof. Chen, Baylor College of Medicine, Huston, USA.
• Team up by Prof. Tzeng, Director of Nano center, NCKU.
• Hosted by Prof. Chen, Vice-Dean of NTU hospital.
21 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Aim-1: Determine the receptors for L5 on EC membrane
• L5 or LDL5 is invented by Prof. Chen’s team at Baylor College of Medicine.
• Prof. Chen’s team provides L5 to NTU and NCKU team for single-cell and clinical studies. PAFR and LOX-1 may be activated by
L5 signals sequentially
22 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Aim-2: Temporal tracing of L5 localization in EC
• Nano-tag on L5 by Prof. Yeh, NCKU
• High-resolution Optical Microscope by Prof. Tzeng, NCKU Nano center.
Left panel: aggregates of L5-nano taggedRight panel: a single L5 molecules-nano tagged
23 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Aim-3: Determine calcium-signaling effects during L5 apoptotic process
• Build up VEC model to find the ionic activities during L5 apoptotic process.
• Create a transparent single-cell platform for L5-tagged VEC studies.
SERCA
?
SERCA
TRPCNSC SOC
NCX
M
Ca2+ mechanical sensor
LoX-1
ER
Mitochondria
L5
?
[Ca2+]i
PAFR
Na+/Ca2+
?
? ? ?
VRACBCl
CaCC
RACC
KATP
BKCa
SKCa
KCa
IRK
Cl-
CNG
GPCR
CFTR
SERCAIKCa
+
?
Na+
Ω
Caveolar
(GPCR,
VAMP-2)
An EC model with ion channels and organelles.
24 - Virtuoscope & Wireless Mixed Signal Biochip Lab
60 GHz 無線生醫感測網路晶片系統-3rd project
• International Collaboration by CRC (Canada), CIC, NTU, NTHU, NCTU, NCKU.
• 60 GHz GaAs experiences from CRC (Canada) exchanged with 60 GHz CMOS experiences from universities and CIC in Taiwan.
• Invited talk at IEEE conference about this project.
• Leaded by 呂學士教授 , EE, NTU, honored by solicited invitation talk in 2006 ISSCC.
25 - Virtuoscope & Wireless Mixed Signal Biochip Lab
60 GHz Antenna Design and Temperature RFIC
• 60 GHz antenna design in LTCC and CMOS
• Near-body communication RFIC design
• In-body communication RFIC design.
• Physiological Signal RFIC design for portable devices.
26 - Virtuoscope & Wireless Mixed Signal Biochip Lab
Good luck to All of You! and
Thanks for Your Attention
top related