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![Page 1: GREEN NANOTECHNOLOGY IN NUCLEAR …€¦ · green nanotechnology in nuclear medicine—tumor specific radioactive gold nanoparticles for new approaches in cancer therapy kattesh v.](https://reader031.fdocuments.net/reader031/viewer/2022022620/5bae402d09d3f2c87a8cc300/html5/thumbnails/1.jpg)
GREEN NANOTECHNOLOGY IN NUCLEAR MEDICINE—TUMOR SPECIFIC RADIOACTIVE GOLD NANOPARTICLES FOR NEW APPROACHES IN CANCER THERAPY
Kattesh V. Katti MSc.Ed, PhD, DSC, FRSC, FNAI
Menka Khoobchandani, Kavita Katti, Amal Y. Al-Yasiri, Cathy S. Cutler,
Sudarshan Loyalka and *Ademar Benévolo Lugão,
Kattesh V. Katti: Distinguished Curators’ Professor of Radiology and Physics
Margaret Proctor Mulligan Distinguished Professor of Cancer Research
Director, Institute of Green Nanotechnology; School of Medicine, University of Missouri-Columbia, Missouri, USA
Ademar Benévolo Lugão : * Nuclear and Energy Research Institute – IPEN/CNEN/Sao Paulo, Brazil
International Conference on Applications of Radiation Science and Technology (ICARST-2017)
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First to discover,
develop, and commercialize
an imaging agent for use in
humans.
First to develop bone
cancer therapy agents
Therasphere:
For liver tumor
therapy
MU-Gold: Chemotherapy for
prostate tumor
Green Nanotechnology In Nanomedicine
Ceretec™(technetium Tc-99m
exametazime)
An imaging agent with 2 distinct
indications. One is for visualization
of cerebral blood flow.
The other is for labeling of white
blood cells to localize sites of
infection and inflammation.
THREE FDA APPROVED DRUGS
http://www.amershamhealth-us.com/ceretec/
http://www.cytogen.com/professional/quadramet/pi.php
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TheraSphereTM
TheraSphereTM ---Safe---Minimum side effects ---
Liver cancer--- ranks #3 in deaths due to cancer---kills more that one million persons per year worldwide.
Yttria alumina silica glass meets stringent requirements --- chemically durable, high yttria content.
tumor
71 treatment sites in 33 states, ~ 170 world-wide
3
human hair
increased life expectancy
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Radioactive Gold Ideal For Theranostics Applications
• Tremendous interest
in gold due to
favorable nuclear
properties
– Au-198: 2.70 day
half life, 961 keV β-,
411 keV γ (96%)
– Au-199: 3.14 day
half life, 453 keV β-
,158 keV γ (40%)
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Treatment Options for Prostate Cancer
• · SURGERY
• · CHEMOTHERAPY
• · EXTERNAL BEAM RADIATION THERAPY
• · IMMUNOTHERAPY
• · BRACHYTHERAPY
• · HORMONE THERAPY
• · STEREOTACTIC RADIOSURGERY
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Mangiferin a xanthonoid phenol from Mango peel
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Mangiferin
+ NaAuCl4
OH
OH HO
HO
=
Au OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO Au OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
Au OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO Au OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
OH
OH HO
HO
Characterization of AuNPs by TEM, UV-vis spectrophotometry and by zeta size instrument
535 nm
Hydrodynamic size= 60±2 nm Zeta potential = -31.5±3 mV
TEM image
Mangiferin—An electron-rich phytochemical transforms 198-gold precursor(s) into Gold Nanoparticles
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Synthesis of MGF-AuNPs and MGF-198AuNPs
Mangiferin from
mango peel
+ Mangiferin (MGF)
NaAuCl4
H198AuCl4
MGF-198AuNPs
MGF-AuNPs
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Prostate Tumor Therapy Agent: Clinical Candidates Identified
55 nm
35 nm
Size: TEM, CPS-Disc centrifuge systems= 35 nm Toxicity: Stability: Stable in vitro Stable in vivo (mice)
MGF-AuNPs gold Nanoconstructs: MGF-AuNPs
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MGF-AuNPs Cellular Internalization
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Cellular trafficking pathways of MGF-AuNPs
( PC-3 cells)
Dark field microscope images showing MGF-AuNPs uptake into PC-3 cells Incubated with and without inhibitors, post treated with MGF-AuNPs with dose- 8.2 µg Au/mL, incubated for 90 min.
Control- PC-3 cells without treatment
MGF-AuNPs treated Receptor blocked with dynamin inhibitor, Indicated: clathrin or caveolae pathways
Chlorpromazine treated, Indicated clathrin mediated endocytosis
Treated with anti-clathrin AB; Confirmed clathrin mediated endocytosis
Treated with anti-caveolae AB; Particles internalized which confirmed caveolae independent endocytosis
Nucleus
Cytoplasm
AuNPs
Results indicated clathrin mediated endocytosis
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In vivo tumor retention of MGF-198-
AuNPs (PC-3 Xenografts)
-20.00
0.00
20.00
40.00
60.00
80.00
100.00
Blo
od
Hea
rt
Lun
g
Live
r
Sple
en
Sto
mac
h
L In
t
Sm In
t
Kid
ney
Uri
ne
Fece
s
Mu
scle
Bo
ne
Bla
dd
er
Bra
in
Pan
cre
as
Car
cass
Tum
or
Ave
rage
% D
ose
Organs
30 min 1 hour 2 hour 4 hour 24 hour
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Therapeutic Efficacy Study of MGF-AuNPs
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New Generation of Green Nanotechnology-Based-
Radioactive Gold Nanoparticles with Optimum Tumor Retention
-20.00
0.00
20.00
40.00
60.00
80.00
100.00
30
min
1 h
ou
r
2 h
ou
r
4 h
ou
r
24
ho
ur
% D
ose
/org
an
Time
Avg % Dose per Organ comparison chart GA (aver) EGCG Pomegranate MGNF
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Control Group
Treated Group
Tumor
Tumor
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2005-2015 2015 2013-2018 2020
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• Intralesional administration of GA-198AuNP (with 85% Non Radioactive
Gold Nanoparticles) caused no acute systemic toxicity
• Overall well tolerated
• No evidence of abscess formation at 3-4 weeks
• Monitoring for urethral obstruction paramount
Long Term Systemic Toxicity
First Complete In vivo Toxicology Measurement in
a Human Mimicking Model—Dogs!!!
Katti, Bechtel et al: International Journal of Nanomedicine: 2014:9 5001–5011
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EGCG-198AuNPs: In vivo therapeutic efficacy(PNAS 2012)
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Therapeutic Efficacy Studies of MGF-198-AuNPs
(JCS Dalton in Press-2017)
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Intratumoral Injection
Complete inhibition of
Tumor propagation
Tumor
Cancer cells + Normal
cells
Malignant + Mutated cancer
cells
Cancer Stem Cells
Intratumoral delivery stops complete tumor propagation
Normal Cells Cancer Cells
Malignant Cancer Cells
Mutated CancerCells
Cancer Stem Cells
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Ademar Lugao
Jeff Smith
Wynn Volkert
Carolyn Henry
Aslam Khan
Tamer Hafez
Menka Khoobchandani, Velapi Thipe, Kiandokht Amiri, Tamer Hafez, Sager
Gupta, Melissa Zaidi, Kattumuri Vijayalakshmi, Satish Nune, Nripin
Chanda, Ravi Pandrapragada, Rajesh Kulkarni, Sharanya Bhaskaran, and
Kishore Pillarsetty, Ravi Shukla,
ACKNOWLEDGEMENTS
Cathy Cutler
David Robertson
Stan Casteel
Jeffrey Bryan
Sandra Bechtel
Kavita Katti
FUNDING: NCI-CANCER NANOTECHNOLOGY PLATFORM; IAEA, Brazilian CNPQ NANOCHARACTERIZATION LABORATORY, NCL; NIH;
(National Institutes of Health: Grant No:1R01CA119412-01 KATTI (PI)), MU-OFFICE OF RESEARCH, RADIOLOGY & MURR